<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text"  v-model="username"/>
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model.number="nianling" />
    </div>
    <div>
      <span>性别:</span>
      <select  v-model="sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="add">添加</button>
      <button @click="xiugai">修改</button>
    </div>
    <div>
      <table
        border="1"
        cellpadding="10"
        cellspacing="0"
      >
        <tr >
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item,index) in arr" :key="index">
          <td>{{index+1}}</td>
          <td>{{item.name}}</td>
          <td>{{item.age}}</td>
          <td>{{item.gender}}</td>
          <td>
            <button @click="del" >删除</button>
            <button @click="bianji">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data(){
    return{
      arr:[{
        id:1,
        name:'a',
        age:'18',
        gender:'男',
      },
      {
        id:2,
        name:'b',
        age:'20',
        gender:'女',
      },
      {
        id:3,
        name:'c',
        age:'23',
        gender:'女',
      }],
      username:'',
      nianling:'',
      sex:'',
    }
  },
  methods:{
    add(){
      if (this.username.trim().length === 0 || this.nianling === 0) {
        alert("不能为空")
        return
      }
    }
  }
  
}
</script>